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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-38499 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: clone_private_mnt(): make sure that caller has CAP_SYS_ADMIN in the right userns What we want is to verify there is that clone won't expose something hidden by a mount we wouldn't be able to undo. "Wouldn't be able to undo" may be a result of MNT_LOCKED on a child, but it may also come from lacking admin rights in the userns of the namespace mount belongs to. clone_private_mnt() checks the former, but not the latter. There's a number of rather confusing CAP_SYS_ADMIN checks in various userns during the mount, especially with the new mount API; they serve different purposes and in case of clone_private_mnt() they usually, but not always end up covering the missing check mentioned above.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/36fecd740de2d542d2091d65d36554ee2bcf9c65 kernel.org Patch 
https://git.kernel.org/stable/c/38628ae06e2a37770cd794802a3f1310cf9846e3 kernel.org Patch 
https://git.kernel.org/stable/c/c28f922c9dcee0e4876a2c095939d77fe7e15116 kernel.org Patch 
https://git.kernel.org/stable/c/d717325b5ecf2a40daca85c61923e17f32306179 kernel.org Patch 
https://git.kernel.org/stable/c/dc6a664089f10eab0fb36b6e4f705022210191d2 kernel.org Patch 
https://git.kernel.org/stable/c/e77078e52fbf018ab986efb3c79065ab35025607 kernel.org Patch 
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html CVE Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-38499
NVD Published Date:
08/11/2025
NVD Last Modified:
01/07/2026
Source:
kernel.org